Explaining the Tua Rule: How Tua Tagovailoa changed NFL's concussion protocol
Dolphins followed concussion protocol with Tagovailoa's injury
NFL concludes investigation of Dolphins' handling of latest Tua Tagovailoa concussion - On3
NFL, Players Union Agree to Change Concussion Protocol - The New York Times
Dolphins QB Tua Tagovailoa DID suffer a concussion in Sunday's loss to the Packers
Report: Tua Tagovailoa enters NFL's concussion protocol, unlikely to play crucial game vs. Patriots - Dolphin Nation
NFL under fire over its concussion protocol following Tua Tagovailoa's back-to-back game hits - ABC News
Tua, Dolphins survive scoreless 2nd half to beat Steelers
Tua Tagovailoa Is in the NFL's Concussion Protocols Again - WSJ